Item and source memory for emotional associates is mediated by different retrieval processes
Item and source memory for emotional associates is mediated by different retrieval processes
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DOI：
10.1016/j.neuropsychologia.2017.12.015
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发表时间：
2020-08
期刊：
影响因子：
2.6
通讯作者：
C. Ventura-Bort;F. Dolcos;J. Wendt;Janine Wirkner;A. Hamm;M. Weymar
中科院分区：
文献类型：
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作者：
C. Ventura-Bort;F. Dolcos;J. Wendt;Janine Wirkner;A. Hamm;M. Weymar
最近的事件相关电位(ERP)数据显示，一周后的再认记忆测试显示，在情绪背景图片中编码的中性物体比在中性背景中编码的物体记忆更好。在这项研究中，我们调查了这种对项目的长期记忆优势是否也与对上下文来源细节的正确记忆有关。此外，我们对熟悉度和回忆过程可能分离的贡献感兴趣(使用记忆/知道程序)。结果表明，项目记忆的表现主要是由熟悉的主观体验驱动的，与物体之前是在情绪还是在中性环境中编码无关。然而，相关背景图片的正确来源记忆是由回忆驱动的，当内容是情绪化的时候，这种记忆会增强。在事件相关电位中，正确识别的旧物体引起额叶新旧事件相关电位的新/旧效应(300-500ERPS毫秒)，而不受背景类别的影响。在 中，被正确识别的旧物体引起额叶新旧效应(300-500ERP毫秒)。与我们之前的研究(Ventura-Bort等人，2016b)一样，从情绪背景中提取物体与较大的顶叶新旧差异(600-800 ms)相关，表明更强的回忆参与。因此，这些结果表明，基于回忆的提取对项目和与情绪事件相关的中性信息的背景背景来源记忆有更大的贡献。
Recent event-related potential (ERP) data showed that neutral objects encoded in emotional background pictures were better remembered than objects encoded in neutral contexts, when recognition memory was tested one week later. In the present study, we investigated whether this long-term memory advantage for items is also associated with correct memory for contextual source details. Furthermore, we were interested in the possibly dissociable contribution of familiarity and recollection processes (using a Remember/Know procedure). The results revealed that item memory performance was mainly driven by the subjective experience of familiarity, irrespective of whether the objects were previously encoded in emotional or neutral contexts. Correct source memory for the associated background picture, however, was driven by recollection and enhanced when the content was emotional. In ERPs, correctly recognized old objects evoked frontal ERP Old/New effects (300–500 ms), irrespective of context category. As in our previous study (Ventura-Bort et al., 2016b), retrieval for objects from emotional contexts was associated with larger parietal Old/New differences (600–800 ms), indicating stronger involvement of recollection. Thus, the results suggest a stronger contribution of recollection-based retrieval to item and contextual background source memory for neutral information associated with an emotional event.